Casing-elevator.



E. E. GREVE.

CASING ELEVATOR.

APPLICATION FILED JAN. 23 1913.

1, 1 1 9,004, Patented Sept. 29, 1914.

Snow H 06 STATES RA mimic Elli? OF PITTSBURGH, PENNSYLVANIA,-ASSIGNGR T0 OIL WELL SUPPLY ocomo-rsnovmoo.

Applicctimi filed January 23, 1913.

To (156193 609714 it mag; conccm: I

11% ii; .lmown that l looco citizen the Ulllifll 5 2:,ios1diflg c Pill chu. in the count Jhiliflflllyl and 8mm of cm vlvonizi, hove lZITQlIlLCli C01 new and osci'ul Improvcmento in Cas1ng- Elcvatois; and l: do hereby declare the fol-- lowing to ho a full, clear, and exact description of tho invention, such as will enable others sliillocl in the not to which ituppertfiius to make zmvl use the same.

My iuvcnl-ioii Yolutcs lo the construction of that class of clcviccc commonly termed cosing: elevators u, for raising and lowering,

EL Guovii, a

as Well as coon. imp; up, casing and tubing, in sin mg 011, ill um or gas Wells.

It how "for its scvcml o cots, i/hc provinction of a, cosiog olovoior of a character which con ho readily honrllcil the derrick and applied to the. casing by single opcracor, which can he opened. and closed on. the casing oi" tubing; in. close proximity lo the derrick loos or the collar on the casing or tubing and without lowering the elevator below the collar more than is required to re licvc tho clovctor oi the Weight,- of the casing.

It also has for its further object tho provisiou of locking (ievices for the movable tion of the elevator which will act; automatically on the closing of the movable section, not o'nl ho secure the sections but also to seoui'otho lock prevent accidental release of the locking; (lcvicc when the Weight of the casing; or tubing is on the elevator.

To this end my invention generally stated embodies the combination in an elevator of a bail, a hail member on which the bail is j'ou1- nalccl, a movable member pivoted on the boil memhensnfi a locking mechanism whose rcleaso is controlled by the bail whereby the securing of the elcvator in position on the casing or *mbino is automatic, and the release of the locking mechanism is dependent on. the Withdrawal of the weight OI the casing or coining from the elevator.

In lhc drawings chosenfor the purpose of illustrating my invention, the scope whereof is pointed out in the claims, Figure 1 is a plan View, partly in section, of a casing clevator emhoolying my invention; Fig. 2 is a reduced View, partly in side elevation and partly in vertical section, of the casing clevator shown in Fig. 1; Fig. 3 is an end View, in elevation, partly broken away, of the casiiig elevator shown in Figs. 1 and 2; Fig. 4

tended to handle.

' 2? 1359114. Serial No. M51387,

a detail sectional view of pc- 'iion of th bushing for the bolt; chamber.

Lilac symbols refer to like parts wherever they occur.

In the drawings, A, B indicate the membcrs of the elevator, C the boil thereof, and. I) the locking bolt which secures the rocinlicrs A and B in operative relation.

The bail-member A, which is of general Ushapc, or somewhat more than a; semicircle to leave an opening for the introrlum tion of the casing or tubing, is'providcd cl; (limnctriczilly opposite points on its exterior wich trunnions l, l for the reception of the journal eyes 1" oh {ho ends of the bail C whereby the bail is'jom'naled on the body of the elevator. This bail member A has also on one of its arms a projecting perforated portion 2 "for tho r'cccption of a pintlo or pivot bolt 3 whcrchy the movable member 13 is hinged. to or pivobcd on the bail member- A, and in its opposite arm a recess 4 for the reception of an. interlocking portion of the member B. At the bottom of the recess 4 of member A is a further recess-5 Which constii/utes a keeper for the spring-actuated locking holt carried by the movable member B.

The movable member ll which is of gun era-l arc shape is of :1 size to close the opening in the bail member A to which it is hinged, and when closed on the member A to constitum therewith 21 complete circlc or ring the internalclianrlelicr of which substantially corresponcls with tho external diameter of the casing or tubing which the elevator is in- This movable member 33 has at ooe siclc the perforated lugs or knuckle mcmlvol's Elifor the reception of tho pintle or pivoivbollr 3, mod on its opposite side a projection 6' which houses the automotic locking devices, and; which is in a form adopted to enfiar the recess 4 of bail member A, so that by reason of the interlocking pgu'ls 2, 2" and 6, 4:- the hinged member B is solidly supported onond from-tho bail member A. of the elevator. The portion 6 of the movable member B which houses the locking mechanism is bored through tangentially as at '2', to form a bolt, chambr for'thc locking bolt of the elevator, which bolt chamber opcns inwardlfy on the edge of projection 6 of the" movable member B where it engages the bail the bail for preventing the accidental movejournal-led, a movable member pivoted on the meat of the lock'when the elevator is loaded. bail member, a spring closed lock for the 2. In a casing elevator, the combination movable member, and means on the bail for of a bail, a bail member on which the bail is preventing the accidental movement of the 5 journaled, a movable member pivoted on look when the elevator is loaded. 25 the bail member, an automatic look for the 5. In a casing elevator, the combination movable member, said lock being actuated of a bail, a bail member on Which the bail is inclependentlv of the bail, and means on the 'ournaled, a movable member pivoted on the bail for preventing the accidental movement bail member, a spring-actuated lock for 1-0 of the lock when the elevator is loaded. the movable member. a latch for retracting 30 0. .n a casing elevator, the combination the spring-actuated lock, and means on theoi' a bail, a bail member on which the bail is bail for preventing the accidental movement journaled, a movable member pivoted on the of the latch when the elevator is loaded. bail member, a lock for the movable member, In testimony whereof I a-fiix my signature,

15. a latch for actuating the lock, and means 011 m the presence of two subscribing witnesses. 35

20 of a bail, a bail member on which the bail is j R. A. STEWART.

the bail for preventing the accidental movement-of the latch when the elevator is i I EDGAR GREVL' lemleo'. Witnesses 4-. In a casing elevator, the combination K. H. SESSIONS 

